﻿using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string constr = "server=.;uid=sa;pwd=123456;database=Student_db";
            SqlConnection con = new SqlConnection(constr);
            con.Open();
            string name = TextBox1.Text;
            string pass = TextBox2.Text;
            string sql = "select * from StudentInfo where stu_name=@name and password=@pwd";
            SqlParameter[] pars =
{
                new SqlParameter("@name",name),
                new SqlParameter("@pwd",pass)
            };


            SqlCommand sqlCommand = new SqlCommand();

            sqlCommand.Parameters.AddRange(pars);

            int s = sqlCommand.ExecuteNonQuery();

            sqlCommand.ExecuteScalar();

            

            SqlDataReader sqlData = sqlCommand.ExecuteReader();
            if (sqlData.Read())
            {
                Session["CurrentUserName"] = name;
                Response.Redirect("登录成功");
            }
            else
            {
                Literal1.Text = "登录失败！";
            }
        }
    }
}